Arch for fire-chambers.



Patented July I6, |90l. y r. w. scHuAuTz. ARCH FUR FIRE CHAMBERS.

(Application led Apr. 15, 1901*).

i No. 673,52l.

L #A S l y@ MAJ w @xk a f @N 1 UNITED STATES PATENT OFFICE.

FREDERICK W. SCHNAUTZ, NEW YORK, N. Y.

ARCH FQR FIREGHAMBERS.

SPECIFICATION forming part 0f Letters Patent NO. 678,521, dated. :TillyA16, 1901. Application filed April 16. 1901. Serial No. 65,855. (Nomodel.)

To a/ZZ whom if; may concern:

Be it known that I, FREDERICK W. SCHNAUTZ, a citizen of the UnitedStates, and a resident of New York city, county and State of New York,have invented certain new and useful Improvements in Arches for Fire-Chambers, of which the following is a speciication.

This invention relates to an improved arch for fire-chambers which is soconstructed that it may be readily taken apart for the purposes ofrepair and in which when assembled all the parts are connected in a firmand reliable manner.

In the accompanying drawings, Figure 1 is a vertical transverse sectionof a nre-chamber provided with my improved arch on -line 1 1, Fig. 2.Fig. 2 is a vertical longitudinal section on line 2 2, Fig. 1; and Fig.3, a perspective view of one of the beams e..

The letter @represents the fire-chamber of a boiler or otherheat-generator, b being the grate and c the i1ue,'all of suitableconstruction.

The arch is composed of a curved plate d, supported upon the walls A.From the lower face of the plate d depend a series of parallellongitudinally-arranged T- beams c, anged at their lower` ends e', whilefitting with their upper ends into longitudinal grooves d of plate d.The plate d is perforated at suitable intervals above each groove forthe passage of upwardly-extending pins or projections e2, formed on theupper ends of the beams.

To fasten the beams to the plate d, the webs of the beams are fittedinto the grooves d', so that the pins e2 pass through the perforationsof the plate. The beams are then locked in position by suitable means,such as cotters f, introduced into eyes ea of pins e2 or by nuts orsimilar devices.

The beams e sustain the lining-blocks g, which are set into thelongitudinal channels formed between the beams. The blocks rest upon theanges e', which serve mainly to protect the edges of the blocks fromdirect heat.

When it is desired to remove or replace burned-out beams, thecottersfare withdrawn to unfasten the beams and cause their detachment.The blocks may be removed and replaced either from the fiue c or by rstdetaching the beams in the manner described.

It will be seen that in my improved arch the parts are all securelyconnected and that at the same time any part may be readily removed forthe purpose of repair or replacement.

What I claim is- 1. An arch for re-chambers composed of a curvedperforated plate, a series of beams having pins that project throughsaid plate, means for removably securing said pins to the plates, andblocks fitted between the beams, substantially as specified.

2. An arch for fire-chambers composed of a curved and grooved plate,T-beams fitted within the grooves, means for removably fastening thebeams to the plate, and blocks fitted between the beams, substantiallyas specified. n

3. An arch for fire-chambers composed of a curved and grooved plateperforated above each groove, beams adapted to engage the grooves andhaving projections that pass through the perforations in the plate,fasteners engaging the projections, and blocks tted between the beams,substantially as specified.

Signed by me at New York city, county and State of New York, this 13thday of April, 1901.

FREDERICK w. sci-TNAUTZ. Witnesses:

F.' v. BRIESEN, E. J. RAY.

